The Beach!

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Across
  1. 3. It may have a sail or oars
  2. 5. Has fins and a tail and swims in the ocean
  3. 6. The first state
  4. 7. You use them to see underwater
  5. 9. Gives you shade on a sunny day
  6. 10. They crash on the shore
Down
  1. 1. Build it in the sand
  2. 2. They save people in danger
  3. 4. Find it in the sand
  4. 8. What surfers ride